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Tim Chuey Weather
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Here is my weekly weather quiz question. What is the “free air freezing level” we refer to in the Cascades weather forecasts? Please define what it is. Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

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Advisories: A FLASH FLOOD WATCH IS IN EFFECT THROUGH FRIDAY MORNING FOR PARTS OF EASTERN OREGON INCLUDING NORTH CENTRAL OREGON, THE LOWER COLUMBIA BASIN OF OREGON, THE GRAND RONDE VALLEY, WALLOWA COUNTY,  THE NORTHERN AND SOUTHERN BLUE MOUNTAINS OF OREGON, THE JOHN DAY BASIN, THE OCHOCO-JOHN DAY HIGHLANDS, THE FOOTHILLS OF THE BLUE MOUNTAINS, AND THE EAST SLOPES OF THE OREGON CASCADES.

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closed low (brown circle) slid south from Canada through Oregon on to the California/Oregon border, where it will stay a while, and then start to migrate north and east today as it continues to bring us more clouds and the chance of showers or thunderstorms as it rotates the air around it from southeast to northwest. A weak cold front will slide though Saturday (position shown is Sunday) with clearing skies and warmer temperatures behind it. We will dry out and warm up as we head into the weekend and next week.
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The pollen count for the Eugene-Springfield area is:
Grass- Moderate (8) (Observation: It looks like the grass pollen season is just about over,      since grass is just barely in the moderate category, by 1.)
Trees- Low (7)
Data from Oregon Allergy Associates www.oregonallergyassociates.com.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Cloudy this AM, a mix of clouds and sun with a slight (20%) chance of showers and thunderstorms this afternoon (under 0.10 in. of rain possible), partly cloudy with a (40%) chance of showers and a slight (20%) chance of thunderstorms this evening, cloudy with a good (50%) chance of showers late tonight (under 0.10 in. of rain possible, more in storms), cloudy with a slight (20%) chance of showers Friday AM, just partly cloudy Friday afternoon, mostly clear Friday night, partly cloudy Saturday AM, mostly sunny in the afternoon, then mostly clear Saturday night highs 80-84 lows 56-52. Cloudy Sunday AM, partly cloudy Sunday afternoon, partly cloudy Sunday night through Tuesday, mostly clear Tuesday night, then mostly sunny and warmer Wednesday highs 82-85 lows 52-55. (seasonal averages high 84 low 52)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy this AM, partly cloudy with a (40%) chance of scattered thunderstorms this afternoon and evening (under 0.10 in. of rain possible, more in storms possibly heavy at times), a (30%) chance of scattered showers and thunderstorms tonight (0.10 in. of rain possible, more in storms), mostly cloudy with a slight (20%) chance of thunderstorms Friday AM (under 0.10 in. of rain possible), sunny Friday afternoon, mostly clear Friday night, sunny Saturday, then partly cloudy Saturday night highs near 82 lows 58-53 warming to 58 Saturday night. Partly cloudy Sunday, mostly clear Sunday night then mostly sunny Monday through Wednesday with mostly clear nights highs 80-87 lows 57-52 warming to 56 Tuesday night. (seasonal averages high 85 low 57)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with a slight (20%) chance of isolated coastal thunderstorms and scattered inland thunderstorms this afternoon (under 0.10 in. of rain possible, more in storms), a (30%) chance of evening coastal showers and areas of drizzle late at night, a slight (20%) evening inland thunderstorms with areas of drizzle late tonight (under 0.10 in. of rain possible, more in storms), mostly cloudy Friday, patchy AM coastal drizzle, mostly cloudy Friday night, then partly cloudy Saturday and Saturday night highs near 66 lows 54-56. Partly cloudy Sunday, mostly clear at night, mostly sunny Monday and Tuesday with mostly clear skies at night, partly cloudy Wednesday AM, then sunny Wednesday afternoon highs 63-65 lows near 55. (seasonal averages high 65 low 53).

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Forecast for the Cascades of Lane County:  A mix of clouds and sun today with a slight (20%) chance of AM thunderstorms, a good (50%) chance of thunderstorms this afternoon (0.25 in. of rain possible, more in storms), showers likely (60%) with a slight (20%) chance of thunderstorms this evening, a good (50%) chance of showers and a slight (20%) chance of thunderstorms late tonight (0.25 in. of rain possible, more in storms), mostly cloudy with a good (50%) chance of showers Friday AM, partly cloudy Friday afternoon, mostly clear Friday night, mostly sunny Saturday, then mostly clear Saturday night free air freezing level 13,000 ft. today, snow level above 8,000 ft. tonight and Friday, free air freezing level 14,000 ft. Friday night through Saturday night highs 68-73 lows near 45. Mostly sunny Sunday through Wednesday with mostly clear nights free air freezing level 13,000 ft. Sunday through Monday, then 14,000 ft. Monday night through Wednesday highs 70-73 lows 45-48.

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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

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Get your local Eugene-Springfield news on-line at Eugene Daily News.com

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